| INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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Flexible impedance and capacitive tensile load Sensor based on CNT composite |
| Zubair Ahmad1, Kh S Karimov2,3, Farid Touati1 |
1. Department of Electrical Engineering, College of Engineering, Qatar University, Doha 2713, Qatar;
2. Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Topi, District Swabi, KPK, 23640, Pakistan;
3. Center for Innovative Development of Science and New Technologies, Academy of Sciences, Aini St., 299/2, Dushanbe, 734063, Tajikistan |
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Abstract In this paper, the fabrication and investigation of flexible impedance and capacitive tensile load sensors based on carbon nanotube (CNT) composite are reported. On thin rubber substrates, CNTs are deposited from suspension in water and pressed at elevated temperature. It is found that the fabricated load cells are highly sensitive to the applied mechanical force with good repeatability. The increase in impedance of the cells is observed to be 2.0 times while the decrease in the capacitance is found to be 2.1 times as applied force increases up to 0.3 N. The average impedance and capacitive sensitivity of the cell are equal to 3.4 N-1 and 1.8 N-1, respectively. Experimental results are compared with the simulated values, and they show that they are in reasonable agreement with each other.
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Received: 24 August 2015
Revised: 20 September 2015
Accepted manuscript online:
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PACS:
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88.30.rh
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(Carbon nanotubes)
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42.70.Jk
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(Polymers and organics)
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47.80.Fg
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(Pressure and temperature measurements)
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Corresponding Authors:
Zubair Ahmad
E-mail: zubairtarar@qu.edu.qa
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Cite this article:
Zubair Ahmad, Kh S Karimov, Farid Touati Flexible impedance and capacitive tensile load Sensor based on CNT composite 2016 Chin. Phys. B 25 028801
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